what 2 do???

my girls are almost 4 weeks in2 flowering, started from clone... im using foxfarm mix soil and have FF grow big,Tiger bloom,and big bloom..
the yellowing started a week ago and its on all my plants.. i dont have a Ph meter yet its in the mail..

What should i feed them???

forgot 2 mention im using a 400hps temps 63-76 44%humity

https://www.rollitup.org/marijuana-plant-problems/132382-deficency-nute-burn-diagnostic.html

http://images.google.com/imgres?imgurl=http://www.gardenscure.com/420/attachments/plant-nursery/209849d1186314471-nursery-troubleshooting-guide-nutrient_chart.gif&imgrefurl=http://www.gardenscure.com/420/nursery-reference/105126-nursery-troubleshooting-guide.html&h=335&w=600&sz=32&hl=en&start=21&um=1&usg=__F3KMhnmZITGTZH2eDhbOvR_DScE=&tbnid=IEsbmNB-iJNiPM:&tbnh=75&tbnw=135&prev=/images?q=tomato+leaf+chlorosis+picture&um=1&hl=en&sa=X

thanks Panta good info 2have.. hope i dont come across as if i havent searched for the answer on my own yet but i have
but with the nukes i have what would u suggest i mix up and how much?? thanks....

im a novice myself so i dont want to give u wrong advice,what i can tell u is u got to mesure your ph of the water and the runof than youl know if its ph related,start from that,and dont go too hard on the nutes

bump, bump
they gettin worse really could use sum advice PLEASE!!!

Well i got my Ph meter in the mail 2day..

water going in was bottled with Ph 7.05-02

RUNOFF was 6.60-6.72 im guessing its low but how 2 raise it?

i haven't watered in 4days so i tested them 2night with only a lil bottled water BUT im still lost on how i mix these nukes 2gether...

i dont think its lock-out b/c they were flushed when i transplanted them bout 2weeks ago

I COULD REALLYY USE SOME HELP WITH THE FF NUKES I GEUSS... AND WHAT 2 MIX UP, 2 GET MY GIRLS GREEN AGIN.....

AGIN.. IM LOST HERE NEED SUM ADVISE

6.6 ph thats ok,about the nutes i cant tell ya much im still in veg. first grow